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County ZIP codes · Tennessee · FIPS 47169

Trousdale County, TN ZIP Codes

Trousdale County, Tennessee has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Trousdale County and 3 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $71,914 in 37074 (Hartsville) to $98,114 in 37031 (Castalian Springs) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Trousdale County?

37022 · Bethpage: $79k37031 · Castalian Springs: $98k37057 · Dixon Springs: $79k37074 · Hartsville: $72k37087 · Lebanon: $82k370873702237074370313705737022 · Bethpage: $79k37031 · Castalian Springs: $98k37057 · Dixon Springs: $79k37074 · Hartsville: $72k37087 · Lebanon: $82k370873702237074370313705737022 · Bethpage: $79k37031 · Castalian Springs: $98k37057 · Dixon Springs: $79k37074 · Hartsville: $72k37087 · Lebanon: $82k3708737022370743703137057
The residential ZIP codes of Trousdale County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 5 postal town names: Lebanon, Hartsville, Bethpage, Castalian Springs, Dixon Springs.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 5 residential ZIP codes in Trousdale County

2 ZIP codes lie mainly in Trousdale County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Trousdale County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
37074 Hartsville 10,932 110 $72k $330k 74%
37057 Dixon Springs 1,016 35 $79k $224k 38%

Partly in Trousdale County

Residential ZIP codes mainly in another county that reach at least 1% into Trousdale County, by their share here
In this county
37031 Castalian Springs 3,926 103 $98k $353k 22%
37022 Bethpage 5,728 66 $79k $288k 13%
37087 Lebanon 56,655 344 $82k $386k 6%

Download the 5 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

5 ZIP codes of Trousdale County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Trousdale County and in the neighboring counties
ZIPIn TrousdaleElsewhere
370876%Wilson County 87%; Smith County 7%
3707474%Macon County 26%
3702213%Sumner County 85%; Macon County 2%
3703122%Sumner County 78%
3705738%Smith County 31%; Macon County 31%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Trousdale County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Trousdale County starts with 370.

Three-digit prefixes of Trousdale County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Trousdale County's
PrefixSectional centerHereAll codes
370 Nashville, TN (SCF 370) 5 77

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.